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      Strong slowing down of the thermalization process of solids\\interacting in extreme near-field regime

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          Abstract

          When two solids at different temperatures are separated by a vacuum gap they relax toward their equilibrium state by exchanging heat either by radiation, phonon or electron tunneling, depending on their separation distance and on the nature of materials. The interplay between this exchange of energy and its spreading through each solid entirely drives the relaxation dynamics. Here we highlight a significant slowing down of this process in the extreme near-field regime at distances where the heat flux exchanged between the two solids is comparable or even dominates over the flux carried by conduction inside each solid. This mechanism, leading to a strong effective increase of the system thermal inertia, should play an important role in the temporal evolution of thermal state of interacting solids systems at nanometric and subnanometric scales.

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          Author and article information

          Journal
          29 June 2021
          Article
          2106.15471
          94cb8ee2-3b78-4aa2-a3fa-00ab69bc4f65

          http://creativecommons.org/licenses/by/4.0/

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          Custom metadata
          cond-mat.mes-hall physics.optics

          Optical materials & Optics,Nanophysics
          Optical materials & Optics, Nanophysics

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